The metal ions well dispersed at microporous zeolite framework are considered to be active sites of catalytic processes. Therefore, the incorporation of these metals into the microporous materials as isolated tetrahedral sites appears to be the important task. We have earlier sho [....] » Read More
Photocatalytic oxidation (PCO) is one of the fastest developed technologies for the control of environmental pollutants (in both gaseous and aqueous state) as well as for energy production (such as hydrogen generation and dye-sensitized solar cell). The PCO process is norma [....] » Read More
Mesoporous silica is a material having a uniformed mesopore, a large specific surface area and a pore volume, and a topology reflecting its bulk architectural matrix. Almost reported catalytic reactions using mesoporous silica have been relied on the Brønsted acid site by [....] » Read More
Vast amount of shale gas and gas hydrates has been discovered, which will undoubtedly change the landscape of the chemical industry. In this context, methane is a feedstock of special interest for the production of key building blocks such as aromatic compounds. Processes that co [....] » Read More
As block-buster opportunities dwindle and personalized medicines prevail there is a strong drive to reduce drug development costs to ensure medicine discovery remains a viable proposition. One outcome of this changing landscape is the pressure to identify scalable synthetic route [....] » Read More
Earlier, we studied the substituent effects on the activation parameters ?H≠ and ?S≠ for isokinetic series of the transesterification reactions of aryl benzoates with potassium aryloxides in DMF. To explain the obtained results we proposed a new interpretation of the isokin [....] » Read More
Microkinetic Rate Theory (MRT) has been an important part of chemical kinetics, being taught in undergraduate physics and chemistry courses, and forming the basis of modern descriptor theory used widely in research. In spite of MRT’s ubiquitous importance, it has remain unf [....] » Read More
The chemical process used to convert oils and fats to biodiesel is known as transestertification. The transesterification process can be carried out either by employing an acid or a base catalyst. We have developed a heterogeneous base catalyst that has been successfully used to [....] » Read More
Cost-effective solar fuel generation requires suitable photocatalysts for artificial photosynthesis. To develop such appropriate photocatalysts, their atomic structure control is of primary importance since their functionalities (e.g., electronic band frame, electric properties, [....] » Read More
The oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3) is undesirable during the selective catalytic reduction (SCR) of nitrogen oxides (NOx) found in the flue gas of power plants. Sulfur trioxide has a toxicity over ten times than that of SO2 and is highly corrosive, res [....] » Read More
Water electrolysis for hydrogen production is very important but not efficient due to high cost of the noble metal containing catalysts or low performance of the non noble metal based catalysts. Water electrolysis involves hydrogen evolution reaction (HER) and oxygen evolution re [....] » Read More
The French Atomic Energy Commission develops innovative processes for the treatment of radioactive organic liquids. One of them, named ELIPSE, involves a thermal plasma working under a water column, which ensures the cooling, the filtration and the scrubbing of the gases coming f [....] » Read More
Atropine sulphate monohydrate(ASM) is a prominent anticholinergic drug . In the present research, osmium tetraoxide(OsO4) catalysed oxidation of ASM with chloramine-T (CAT) in NaOH medium has been kinetically investigated at 303K. The reaction rate exhibits a first – order [....] » Read More
The novel hydrogenation catalysts, palladium (Pd) immobilized in nickel wire (Pd/Niw), were prepared via exterior magnetic field following reduction reaction in this study. Characteristic and the morphology were identified by using X-ray diffraction and scanning electron microsco [....] » Read More
Stereoselective Michael additions represent the staple reactions in the field of organic synthesis. The stereoselectivity of the reactions is usually mediated by bifunctional catalysts, which activate both the electrophile and nucleophile at the same time. One of the many c [....] » Read More
Fischer-Tropsch synthesis (FTS) has been considered a promising way for conversion of syngas (H2 + CO) into synthetic liquid fuels and/or high value-added chemicals. Iron-based catalysts are highly promising for FTS due to their high activity and low cost. In general, the as-prep [....] » Read More
Naturally fallen red cotton flowers are available in plenty in North-East of India, especially in Assam. It is known that these flowers are traditionally being used to prepare cleansing agents in some parts of the state. Our investigation focused on converting these flowers into [....] » Read More
The presentation will deal with the development of ceramic membranes coated with copper oxide and zirconium (CuO and ZrO2) oriented to the oxidation of carbon monoxide (CO) to carbon dioxide (CO2). The ceramic membranes were prepared through the replica technique by impregnation [....] » Read More
The increase in Greenhouse Gas (GHG) concentrations in the atmosphere as well as the depletion of hydrocarbon based fuels have become a global concern, as a result a number of methods aimed to recover and utilize GHG into valuable fuels and chemical feedstock are being developed. [....] » Read More
In order to enhance the activity of selective catalytic reduction of NOx by NH3 (NH3-SCR) using Cu ion-exchanged zeolite catalyst, observation of Cu species in zeolite structure during NH3-SCR reaction have been paid attention. Several studies have been revealed the state of Cu s [....] » Read More
Biopolymers and their composites were used as supports for the preparation of silver-based nanoparticles (Ag-NPs). The supported Ag-NPs were structurally characterized using a range of methods such as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), NMR sp [....] » Read More
p-Xylene is the most important isomer of xylenes for chemical industries since it can be converted into terephthalic acid which is one of the precursors of polyethylene terephthalate (PET). Currently, p-xylene has been mainly produced from petroleum resources through multistep pr [....] » Read More
Minkyung, Lim majored in organic chemistry in the department of applied chemistry at Hanyang University. She is currently a Ph.D. student in the department of bionanotechnology at Hanyang University. She is interested in organometallic catalyst and has published related papers. [....] » Read More
Two isostructural trinuclear coordination polymers (CPs) have been synthesized, characterized and successfully applied as robust heterogeneous catalysts for the oxidation of arylboronic acids into phenols with aqueous hydrogen peroxide (H2O2). The microporous CPs with formulation [....] » Read More
Typically, diverse organic reactions using heterogeneous catalysts are less reactive than those using homogeneous catalysts. Several functionalized supporting bodies have been developed to solve this problem. In this study, we have synthesized new supporting bodies using 3-aminop [....] » Read More
Especially, biomass has a novel advantage, i.e., no CO2 emissions, because of carbon neutral. Recently, charcoal composite iron oxide pellets were proposed to decrease CO2 emissions for the iron-making. These pellets were promising to decrease the starting temperature for iron ox [....] » Read More
Since the copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction was discovered, which is one of the classical click reactions, a various range of the 1,2,3-Triazole synthesis has been extensively developed. In case of formation of 1,2,3-triazole with electron-deficient azi [....] » Read More
The particulate matters (PMs) emitted from marine diesel engine exhaust during the combustion process have low resistivity and extremely small in the range of 70-120nm. These particles cause a various human health and environment impacts. International standards limiting NOx, SOx [....] » Read More
To facilitate the immobilization of the silver nanoparticles with high crystallinity and stability, the mussel-inspired dopamine is functionalized on the surface of the graphene. Considering the unique adhesive property of a catechol group in the dopamine toward metallic ions, a [....] » Read More
A scalable heat and system integrated coaxial cylinder type fuel processor is designed and fabricated. The unit process consists of desulfurizer, steam reforming with metallic structured catalyst, water gas shift(WGS), preferential oxidation and auxillary components(water pump, b [....] » Read More
The quantification of the ligand packing density of metal nanoparticles is of considerable importance for catalysis and for quality control in many applications. The effective catalytic properties of the metal nanoparticles are mostly based on their inherent high surface area to [....] » Read More
Fischer-Tropsch to olefin synthesis has attracted much attention, especially to production of olefin feed stock mainly ethylene, propylene and butylene (C2=-C4=). For selective formation of light olefin, iron based catalysts exhibits high selectivity and activity. However, iro [....] » Read More
In this study, a facile approach was successfully employed to improve the photocatalytic activity of Bi2WO6. The pristine Bi2WO6 (p-Bi2WO6) nanoplates were prepared through a conventional hydrothermal method and then were subjected to sodium hydroxide aqueous solutions with conce [....] » Read More
Use of ecofriendly and biodegradable heterogeneous catalysts is one of the key aspects one needs to consider while engaging in the development of newer generation of chemical processes. Such an effort would ensure, at least in part, the greener perspective of a process. In [....] » Read More
Bimetallic molybdenum-containing oxides have a wide range of applications including numerous catalytic reactions. Previous work has shown that the preparation method has a marked influence on the physical and chemical properties of these kinds of metal oxides. Accordingly, a faci [....] » Read More
a) Synthesis of new Platinum(II) Complexes by Phase Transfer Catalysis. Platinum(II) complexes have been synthesized by many different methods. In general, square-planar platinum(II) complexes contain stabilizing ligands (such as bipyridine, 1, 10-phenanthrolin [....] » Read More
Carbon nanotubes (CNT) and metal sulfides have attracted considerable attention owing to their outstanding properties and multiple application areas, such as electrochemical energy conversion and energy storage. Here we describes a cost-effective and facile solution approach to t [....] » Read More
Many eco-friendly enzymes have been used in industries to promote cleaner production via enzymatic processes. Laccase (EC 1.10.3.2) is a very useful green catalyst for industrial, environmental, and medical applications due to its diverse capability in converting a wide range of [....] » Read More
Experiments have been carried out using a catalytic membrane reactor for the tri-reforming of power plant flue gas for CO2 conversion. The experiments were performed at two different temperatures of 800 and 900 oC respectively. The gaseous stream was composed of O2, CH4, CO2 and [....] » Read More
Here I am going to present the results of our long-term research activities on nanostructured metallic glasses and metallic glassy powders applicable as catalytic, chemical and biological materials. In particular, Au-based nanostructured metallic glasses produced by magnetron spu [....] » Read More
A novel electrode of NiCo2O4 nanowire arrays (NWAs) on new carbon material which takes advantage of the high electrical conductivity to boost the pseudocapacitive performance. Graphene or carbon nanotubes based thin films have been used to fabricate flexible solid-state supercapa [....] » Read More
As typical persistent organic pollutants, polybrominated diphenyl ethers (PBDEs) have aroused highly environmental concerns because of their toxicity and recalcitrant degradation. Here, we will report the visible-light-induced degradation of PBDEs by several strategies. The react [....] » Read More
Title : Advances in the direct synthesis of hydrogen peroxide using Au catalysts
Jennifer K Edwards, Cardiff Catalysis Institute, Cardiff University School of Chemistry, United Kingdom
The field of gold catalysis has expanded rapidly since its inception in the early 1980s, when independently Professors Hutchings and Haruta demonstrated that subdivided nanoscale gold can be successfully utilised as a highly effective catalyst for the hydrochlorination of acetyle [....] » Read More
Title : Decoration of acyclic amines via metal catalyzed C-H activation reactions
Michael Schnurch, TU Wien, Taiwan
Metal catalyzed C-H activation chemistry can be considered as the logic advancement of cross-coupling chemistry (e.g. the famous Suzuki-Miyaura reaction). Instead of using two pre-functionalized reaction partners, the C-H bond itself is used as functional group. This bears the po [....] » Read More
Title : Isotope tracer studies on the mechanism of Fischer-Tropsch synthesis: its impacts on selective catalysts developments, geoscience, planetary studies and the origin of hydrocarbons on the Earth
Buchang Shi, Eastern Kentucky University, United States
The Fischer–Tropsch (FT) reaction is a non-selective process in which CO and H2 are converted to fuels and chemicals such as n-alkanes, 1-alkenes, 2-alkenes and oxygenates as well as branched hydrocarbons. The commercial importance of this reaction is that it provides a rou [....] » Read More
Title : Photodynamic Therapy (PDT) of Tumors: An Overview of Long-Term Team(s) Four Decades Experience
Mohamed El Far, Mansoura University, Egypt
A series of land-mark contributions were made in our laboratories in PDT of tumors by LASER as well as other invented light source(s). Lecture will cover our journey over 40 years from bench to clinical applications. It includes novel approaches as: 1) using natural photosensitiz [....] » Read More
Title : Assessment of the production of hydroxyl radical using nano zero-valent iron embedded in a meso-porous silica matrix
Erick R Bandala, Desert Research Institute, United States
Zero-Valent Iron (Fe0) has been shown to detoxify water by creating hydroxyl radicals through Fenton-like reactions combined with hydrogen peroxide (H2O2) to get rid of organic contaminants. Nano-sized zero-valent iron (n/ZVI) in combination with oxidants and UV radiation, has be [....] » Read More
Title : Catalysis effects over atmospheric particles composed by H2O, HCl, HNO3 and H2SO4: Quantum analysis
Maria de los Angeles Verdes Gago, Autonomous University of Madrid, Spain
Ozone depletion is closely related to HNO3, H2SO4, HCl and H2O particles that form Polar Stratospheric Clouds (PSCs) over polar areas in the winter1-3. Surface–catalyzed reactions on PSCs particles generate chlorine compounds that photolyze readily to yield chlorine radical [....] » Read More
Title : Computational design of novel catalyst system
Tadashi Ogitsu, Lawrence Livermore National Laborator, United States
Recent progresses in theory of catalytic reactions led to successful computationally guided discoveries of novel catalyst systems. However, simultaneously, it also disclosed presence of intimate relation between energetics and kinetic of elemental catalytic reaction processes for [....] » Read More
Title : CO2 activation and reduction catalyzed by FeS nanocatalyst: A DFT study
Nelson Y Dzade, Utrecht University, Netherlands
Iron sulfide minerals are relevant in origin of life theories, due to their potential catalytic activity towards the activation and conversion of carbon dioxide (CO2) to small organic molecules, which may be applicable to the production of liquid fuels and commodity chemicals. Th [....] » Read More
Title : Fexible supercapacitor characteristics from several composite materials
Hee Je kim, Pusan National University, Korea, Republic of
This paper demonstrates, reduced graphene oxide/Manganese selenide and CNT/NiS composite electrodes have been sucessfully synthesized by convenient hydrothermal methode for supercapacitor applications. The hydrothermal reaction carried out with sodium borohydride (NaBH4) as a red [....] » Read More
Title : Pt and Pd Clusters Confined in the Bulk of Fiberglass as an Effective Heterogeneous Catalysts
Bair S Balzhinimaev, Boreskov Institute of Catalysis, Russian Federation
Non-porous fiberglass (FG) textile materials of silicate origin (the BET surface area of ca 0.5 m2/g) are produced for a long time in industry and are widely used as perfect heat and electric insulators. However, these microfiber materials are much less known in catalysis in spit [....] » Read More
Title : Tuning the Surface Adsorption Properties of Polymer Sorbents via Facile Methods
Lee D Wilson, University of Saskatchewan, Canada
Cross-linked polymers were prepared by coupling β-cyclodextrin (β-CD) with two different types of diisocyanates, respectively. Materials with diverse structural and textural properties were obtained by varying the rate of diisocyanate addition: rapid (R) or drop-wise (D [....] » Read More
Title : Metal supported on titania for nitrate reduction
Peter J Miedziak, Cardiff University, United Kingdom
The contamination of ground water with nitrates from highly soluble nitrogen based fertilizers is a major problem. Nitrate and nitrite, which is formed by reduction of nitrate, are toxic to the human body, particularly for infants. Photocatalysis provides a method for removing th [....] » Read More
Title : Fischer-Tropsch synthesis catalyzed by small TiO2 supported cobalt nanoparticles prepared by sodium borohydride reduction
Jorge A Delgado Delgado, Centre Tecnologic de la Quimica, Spain
Fischer-Tropsch Synthesis (FTS) is considered a key process of the XTL technologies (biomass-to-liquid, BTL, gas-to-liquid, GTL, and solid-to-liquid, STL) since through this catalytic reaction, syngas (a mixture of H2 and CO) can be transformed into clean fuels. One of the main c [....] » Read More
Title : Inline concentration profiles in enzyme catalyzed reactive rectification using infrared spectroscopy
Marc Andreas Christlieb, Hamburg University of Technology, Germany
Enantiopure compounds are of high value to the pharmaceutical industry and enzymes such as the lipase B from Candida antarctica (CalB) can perform highly enantioselective reactions. On the contrary enzyme catalyzed reactions are often inhibited by a reaction product or thermodyna [....] » Read More
Title : Thermal stability study of catalysts in esterification reaction processes
Edidiong Okon, The Robert Gordon University, United Kingdom
In this study, the esterification of lactic acid with ethanol catalysed by cation-exchange resin catalyst to produced ethyl lactate also known as a petrochemical chemical solvent was carried used in a batch wise mode. The different catalysts used for the esterification process wa [....] » Read More
Title : Computational study of the Fischer-Tropsch process catalyzed on small Ru clusters: Beta-elimination versus reductive elimination
Edward Brothers, Texas A&M University, Qatar
The Fischer-Tropsch (FT) process is a key step in the production of hydrocarbons from natural gas, coal or biomass. In particular, the FT process generates a mixture of liquid hydrocarbons from synthesis gas (i.e. CO and H2), obtained via steam reforming. The composition of this [....] » Read More
Title : Cobalt(III)-Supported Chemically Modified Mesoporous Silica as Heterogeneous Oxidation Catalyst
Purabi Sarmah, Nalbari College, India
The catalytic activity of a heterogeneous oxidation catalyst, named as Co-CMS1 based on a cubane-like Co(III) oxo cluster which is immobilised on a porous organomodified silica, will be described. The heterogeneous Co(III) supported chemically modified silica (CMS) system (Co-CMS [....] » Read More
Title : Design of heterostructure photoelectrodes for solar fuels
Yan Gu Lin, National Synchrotron Radiation Research Center, Taiwan
Global climate warming and environment pollution have spurred scientists to develop new high-efficient and environmental-friendly energy technologies. Sunlight is a clean, renewable and abundant energy source on the earth. Its conversion to hydrogen has been considered an ideal s [....] » Read More
Title : Photocatalytic hydrogen evolution from water splitting over mixed valence tin oxide semiconductor under visible light irradiation
Toyokazu Tanabe, Kanagawa University, Japan
Water splitting using a particle photocatalyst with visible light has attracted interest, because this will realize efficient conversion of the solar energy to hydrogen fuels for sustainable energy managements. Many water-splitting photocatalysts, such as metal-doped oxides, meta [....] » Read More
Title : Active carbons as nanoporous materials for solving of environmental problems
Victor Mukhin, Neorganika, Elektrostal, Russian Federation
However, up to now, the main carriers of catalytic additives have been mineral sorbents: silica gels, alumogels. This is obviously due to the fact that they consist of pure homogeneous components SiO2 and Al2O3, respectively. It is generally known that impurities, especially the [....] » Read More